配方类型:

METALS AND THEIR TREATMENT

配方说明:

Anticorrosive Dip for Zinc Alloy Castings (Japanese Patent 259
(1956))

配方组成:

Water/1000
Hydrochloric Acid/3
Chromic Acid/100
Hydrofluoric Acid/0.5
Sulfuric Acid/5

配制方法:

Immerse for 20 seconds at 60'C. in this solution